JPH0337106Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is used for mounting devices such as fire detectors and intrusion detectors in a semi-embedded state on ceilings, walls, etc. It is related to the device.

[Prior art] For example, as a mounting device for installing a fire detector etc. in a semi-embedded state on a ceiling surface, etc.,
The one disclosed in Japanese Patent No. 37993 is known.

As shown in FIG.
Push the F-shaped stopper 110, which had been retracted into the inside of the 0 through the hole 102 in the upper base 101, outward from the window 104 of the gate-shaped support 103, tighten the screw 112, and push it along the window 104. By crimping the upper bent portion 111 of the stopper 110 with the presser metal 113 that descends, the collar body 105 and
The ceiling plate 60 is held between the tip of the stopper 110 whose end in contact with the top of the upper base 101 is used as a fulcrum for lying down.

Incidentally, as a device similar to the above-mentioned mounting device, there is a device disclosed in Japanese Utility Model Application Publication No. 58-94089.

[Problem to be solved by the invention] The mounting device disclosed in Japanese Utility Model Publication No. 55-37993 can be mounted on a ceiling surface by simply pushing up the stopper 110 and tightening the screw 112, which is an operation inside the cylinder 100. On the other hand, it is tall, large, and has a complicated structure, and it is necessary to move the stopper a large distance when attaching or detaching it to a ceiling board, making attachment and detachment work cumbersome.

In addition, the mounting structure of Utility Model Application Publication No. 58-94089 is
The movement of the mounting bracket is slight when it is attached to or removed from a ceiling board, etc., but this prevents the mounting bracket from falling or swinging when it is stood up and inserted into a mounting hole in a ceiling board, etc. Therefore, a jig engagement piece is provided at the tip of the mounting bracket, and this is inserted into a jig insertion hole provided in the base. After inserting the base into a mounting hole such as a ceiling board, the jig is inserted into the jig insertion hole and the jig engagement piece is pushed up to allow the mounting bracket to lie horizontally. Insert the jig from below into the small jig insertion hole of the installed base and push up.
The work of laying down the mounting bracket is extremely troublesome and reduces work efficiency.

This invention was made in order to solve the above problems, and provides a mounting device for fire detectors, etc., in which the stopper can be reliably held in that state when it is erected, and can be easily laid down when installed. It is intended for this purpose.

[Means for solving the problem] The mounting device for a fire detector, etc. according to this invention is as follows:
A standing wall is provided between the opening of the main body and the screw insertion hole, and an engaging portion is provided at the tip of the bent piece of the stopper that engages with the standing wall when raised and projects into the opening. .

[Operation] When the stopper is erected, the engaging portion engages with the vertical wall and maintains that state. To lay down the stopper, insert your finger or the like into the opening and push up with the engagement part, and the engagement between the engagement part and the vertical wall will be released and the stopper will lie down under its own weight.

[Embodiment] Fig. 1 is a sectional view of an embodiment of this invention, Fig. 2 is a plan view thereof, and Fig. 3 is a side view thereof. In the figure, 10 is the main body, 20 is a cylinder that accommodates a base part provided with connection terminals such as a fire detector, and 30 is provided at the upper end of the cylinder 20, with an opening 31 in the center. 21 is the cylindrical body 2.
This is a flange body provided on the outer periphery of the lower end portion of 0. 32 is a screw insertion hole provided facing the outside of the opening 31; 33 is a vertical wall provided between the opening 31 and the screw insertion hole 32; and a groove 34 is provided in the center of the vertical wall 33. is formed. Note that the width of the groove portion 34 is formed into an approximately inverted trapezoidal shape such that the width is narrow at the bottom and widens toward the top. Reference numerals 37 indicate guide walls erected perpendicularly to both outer ends of the standing wall 33, and 36 indicates recessed holes provided outside the standing wall 33 along the standing wall 33.
40 is a stopper made of an elastic material, an example of which is shown in FIG. Reference numeral 41 denotes an F-shaped portion bent into an F-shape, and 42 indicates a bent piece obtained by bending one end of the F-shaped portion 41 upward from the bent portion 43 at a substantially right angle. A vertically elongated slot 44 is provided that extends through the bent portion 43 to the bent piece 42 . 45 is a locking piece provided at the tip of the bent piece 42, and on both sides of the base there are hooking pieces 46, 46 protruding from the back surface.
is formed. Note that the width of the locking piece 45 is slightly wider than the width of the lower part of the groove 34 provided in the vertical wall 33 of the main body 10.

51 is a fixing screw inserted into the screw insertion holes 32, 32, 52, 52 are arranged between the guide walls 37,
A square nut 60 into which the fixing screw 51 is screwed
is a ceiling plate, 61 is provided on the ceiling plate 60, and the main body 1
This is a hole into which the cylindrical body 20 of No. 0 is inserted.

Next, the operation of this device configured as described above will be explained. First, before attaching the main body 10 to the ceiling plate 60, as shown on the left side of FIG.
The bent piece 42 is placed upright in contact with the vertical wall 33, the F-shaped portion 41 is brought into contact with the upper bottom wall 30, and the screw insertion hole 3 is placed in contact with the vertical wall 33.
The fixing screw 51 inserted through the screw 2 is inserted into the slot 44 and screwed into the square nut 52 to hold the stopper 40 in a horizontal position.

When attaching the main body 20 to the ceiling plate 60, first,
Loosen the fixing screw 51, pull up the stopper 40 while moving it along the fixing screw 51, and remove the locking piece 45 while making sure that the hooking piece 46 enters the recessed hole 36.
is held between the inner edge of the groove 34 of the vertical wall 33. At this time, the groove part 34 is formed in an inverted trapezoidal shape, and the width of the locking piece 45 is formed slightly larger than the width of the lower part of the groove part 34.
As shown on the right side of FIG. 1, the locking piece 45 is securely held in an upright position on the upper surface of the upper bottom wall 30 with the tip of the locking piece 45 protruding above the opening 31. Note that the hook piece 46 comes into contact with the vertical wall 33 and fits into the recessed hole 36 . In this state, the main body 10 is inserted into the hole 61 until the flange body 21 touches the surface of the ceiling plate 60.

Next, insert a finger or a screwdriver into the opening 31 to push the tip of the locking piece 45 upward. As a result, the locking piece 45 is released from being held by the groove 34 of the vertical wall 33, the hooking piece 46 is released from the recessed hole 36, and the stopper 40 is bent at the bent portion due to its own weight, as shown on the left side of FIG. It rotates around 43 as a fulcrum and lies down on its side. If the ceiling plate 60 is thin, simply tighten the fixing screws 51 as they are, and the rectangular nut 52 will press the F-shaped part 41 of the stopper 40 downward, and the tip of the F-shaped part 41 and the flanged body 21 will be pressed downward.
The main body 10 is fixed to the ceiling plate 60 by holding the ceiling plate 60 between them.

Next, if the ceiling plate 60 is thick as shown on the right side of FIG.
, and lift the stopper 40 upward to lock the hook 46 to the upper edge 35 of the vertical wall 33. As a result, the stopper 40 is placed in a horizontal position with the hook 46 as a fulcrum, and by tightening the fixing screw 51 and pressing the stopper 40 downward with the square nut 52, the tip of the F-shaped portion 41 and A thick ceiling plate 60 is sandwiched between the flange 21 and the main body 10 is attached to the ceiling plate 6.
Fixed to 0.

In the above description, the locking piece 45 of the stopper 40 is protruded, the hook pieces 46 are provided on both sides of the locking piece 45, and the tip of the bent piece 42 is formed into a convex shape.
Although the case is shown in which a groove portion in which the locking piece 45 locks is provided in the center of the vertical wall 33 provided in the vertical wall 33 and is formed in a concave shape,
The standing wall 33 is set upright at the position of the groove 34 shown in FIGS. 2 and 3, and a recess is provided at the tip of the bent piece 42 of the stopper 40, so that the recess is engaged with the standing wall 33 when the stopper 40 is erected. The stopper fitting 40 may be held together.

[Effects of the invention] As is clear from the above explanation, this invention has the following effects:
A standing wall is provided between the opening provided in the upper bottom wall of the main body and the screw insertion hole, and an engaging portion that engages with the standing wall is provided at the tip of the bent piece of the stopper. When standing up, the engaging part engages with the standing wall to ensure that the upright state is maintained, and when the stopper is laid down, it is easy to push up the engaging part by inserting a finger etc. through the opening. The engagement with the standing wall is released, and the stopper can be laid down by its own weight. Therefore, it is possible to obtain a mounting device for a fire detector or the like that is extremely easy to attach and detach.

[Brief explanation of drawings]

Fig. 1 is a sectional view of an embodiment of a mounting device for a fire detector etc. according to this invention, Fig. 2 is a plan view thereof,
Fig. 3 is a side view of the main body, Fig. 4 is a plan view and side view of the fastener, Fig. 5 is a sectional view showing this mounting device attached to a ceiling board, and Fig. 6 is a diagram of the conventional mounting device. FIG. 3 is a cross-sectional view of an example. 10... Main body, 20... Cylindrical body, 21... Flange body,
30... Upper bottom wall, 31... Opening, 32... Screw insertion hole, 33... Standing wall, 34... Groove, 40... Stopper, 41... F-shaped part, 42... Bent piece, 4
5... Locking piece, 51... Fixing screw, 52... Nut.

Claims (1)

[Claims for Utility Model Registration] (1) A cylindrical body, an upper bottom wall provided at the upper end of the cylindrical body and having an opening in the center and a plurality of screw insertion holes on the outside of this opening; A main body consisting of a flange provided on the outer periphery of the lower end of the cylindrical body, an F-shaped part, a bent piece obtained by bending one end of the F-shaped part upward, and a section extending from the F-shaped part to the bent part. It consists of a slotted hole provided in the main body, and fasteners that are arranged on the upper bottom wall of the main body and are fixed by fixing screws and nuts that are inserted into the insertion holes and can be raised or lowered freely. In the mounting device, a standing wall is provided between the opening of the main body and the screw insertion hole, and the tip of the bent piece of the stopper engages with the wall when the stopper is erected, and the opening A mounting device for a fire detector, etc., characterized by having an engaging part that protrudes from the top. (2) The vertical wall provided on the main body has a groove section approximately on the same line as the screw insertion hole, and the engagement section provided on the stopper is an engagement section formed at the tip of the bent piece that engages with the groove section. A mounting device for a fire detector, etc. as set forth in claim 1 of a certain utility model registration claim. (3) The vertical wall provided on the main body is installed approximately on the same line as the screw insertion hole, and the engaging portion provided on the stopper is a recessed portion that engages with the vertical wall formed at the tip of the bent piece. A mounting device for a fire detector, etc., as set forth in claim 1 of the patent registration claim.